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that, it will give what? give the energy to ping-pong ball and it itself will slow down. and so what do you do is you take these things and you bounce them off atoms like the size of carbon. did you ever hear about the heavy water? you bounce them off light atoms or molecules and these things will slow down, so they're moderated and will cause the reaction of more of this fission. you call--nuclear fission, gang, breaking apart, nuclear fission, and you will fission more atoms. anyway, this is something that cause an awful lot of excitement. because along with these two, it turns out the kinetic energy of these particles and these, all flying apart, is awesome. the energy that takes to light up new york city comes about as a result of water pouring over niagara falls. and every water drop has an energy of about this much, four electron volts. electron volts are tiny unit of energy. it's microscopic unit of energy, yeah? but four electron volts per water drop, tnt-- [makes sounds] --you get about 30 electron volts. high-octane gasoline, about 30 electron volts per molecule of combustion,
.learner.org. annenberg media ♪ when we look at a sunset, we see waves of light energy that have traveled an immense distance to reach our eyes. when we look at an ocean, we see waves of water energy that may have journeyed thousands of kilometers to reach our shores. most waves derive their energy from the wind. as the wind blows over the ocean, some of its energy is transferred to the surface, forming waves that move through the water. and it is in large part the power of these waves that makes the coastal environment such a dynamic place. coastal areas are among the most beautiful and desirable places anywhere on earth. the coast and coastal land forms like this beach are the result of a dynamic interaction between two competing geologic agents-- the rocky land masses and the energy of the ocean. people tend to think of these as separate and independent from one another, but by ignoring the intimate connection between land and sea, they fail to realize that this delicately balanced system is subject to continual change. building walls and boardwalks and homes on a shifting coastline is a gamble w
and electron or light or something hits, makes electron go up, come back down, boom, off goes the energy in the form of light. the same thing happens when you excite the innermost electrons. if you excite those-- it takes a lot more energy-- and you're knocking electron way up and it comes way back down, boom, that light photon that emerges is beyond the range of seeing. it's even beyond the ultraviolet, and that's what x-rays turned out to be. simply high frequency light from the orbital electrons jumping orbits that correspond to great energies. but after that, it was found that there were radiations coming from different minerals that did not have to do with the electron orbiting around nucleus. it had to do with the nucleus itself. and the radiations that were emitted, to make a long story short, were three different types. now you might think they'd call them maybe "a," b, c, right? but these are physicists, gang. we didn't call them "a," b, c. you know what we called them? alpha, beta, gamma. that's "a," b, c in greek, yeah? so alpha, beta, gamma ray. and it turns out that those ra
me but basic terminology that we see drawn out of the tradition of chi- material energy, li- the principle of spiritual energy and together the two combined to be the essence of everything that exists. so, inside me, inside the table, inside everything that's in this room, that's going on, that kind of balance here. mythic; two names it's a vast panorama of scholars, and princes, and kings, and dynasties as you may well know but the two key names that come up in the mythic dimension; in other words the great leaders, if we must have leaders. confucius of course; the great scholar, drawn from his name becomes confucianism and lao tzu the mysterious. some say he didn't even exist; we're not sure when he existed but the composite leader-- and we will have an expert thank goodness on here because i am certainly not one. dr glenn shive will be with us to help us sort through some questions. but i couldn't help but think when we look at the yin yang symbol, i'm sure this is an original insight in terms of chinese religion, but confucius is very much like a yang side with lao tzu a
, but still supplies sufficient energy to carry out day-to-day activities, just at a slower pace. strength also begins to slowly decline. at the age of 60, most men have lost 10 to 20% of their muscular strength. the percentage is even higher for women. bones lose minerals, and become shorter. the back begins to slump because of weakened muscles, and the disks in the spine begin to deteriorate, causing the bones to move closer together. as a result, both sexes begin to shrink in height as much as half an inch a year. the brain also begins to shrink with age. mental abilities and intelligence remain constant, but the rate at which the brain processes information slows down, causing slower reaction time and movement. and because an aging body requires less upkeep, metabolism slows down as well. the other thing... we wanted to check on was on your feet. they're big. for years, scientific research on aging focused only on its negative aspects. but improved medical care and extensive public health programs have dramatically increased the average human lifespan. over 31 million americans-- almos
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that it takes as much time and energy for a young person to come back and then get into a different routine as it did to pare and train them to go to war. i think we need to do a lot of hard thinking, both in the department of defense, and the v.a., about what our policies and procedures are. >> but before the 11th anniversary of the war in afghanistan, we broadcast from colorado springs. we have looked at a unit that came to iraq and came back and could not turn off the kill switch, they were killing their girlfriends and their wives. the murder rate was about 14 times the rate in colorado springs. that is an important point on these issues. we see, in the peace in "the new york times," the story of staff sergeant white smith. he comes home and randomly runs down a 65-year-old woman and throws her into the back of the car and kills her. we see these her the crimes here, but what about what they are doing there? look at the case of robert bayless, the question of the court-martial at fort lewis- mcchord. >> absolutely. war is messy. certainly, these wars in iraq and afghanistan have been ve
that calculate the energy flow through our ecosystem from plants, say, to herbivores to carnivores. it's important to understand the effects of species on one another because that is changing quite a bit these days. many species are going extinct due to human activity, and also new species are invading ecosystems due to human activity. ecosystems form much more tightly connected networks than many other networks. what happens is that each species is typically within three links of all other species within the ecosystem. that's a lot closer than, say, the six degrees of separation that is supposed to separate human's familiarity networks, "who knows who" within, say, the u.s. and so these are tight networks where effects on one species can propagate to many other species quite quickly. one of the most famous examples of the effects of one species on the others within the ecosystem through the network that we've been studying is the sea otter example. back in the 1800s, the russians and several other western countries paid native americans to hunt sea otters pretty much to the extinction
the same way and some of the same tactics apply and it's very high-energy. this is a very sophisticated, broad-based, well-funded attempt to essentially overturn the secretary of defense's decision to kill the crusader program. poussaint: meanwhile, united defense's paid lobbyists were on the job on capitol hill, targeting members whose constituents had a stake in the fight. and lobbyists can be expensive. for hundreds of thousands or millions of dollars, you can either get a government contract for billions of dollars or get a tax break that may be worth hundreds or millions or billions of dollars -- i mean, it's a relatively small investment. poussaint: but if it seems that companies like united defense have all the clout, it would be a mistake to underestimate the power of an incumbent president. they carry a pretty doggone big stick. as a matter of fact, they don't carry sticks, they carry clubs. 95% of what's in this enormous defense budget never gets discussed publicly at all. and so you need events like this to sort of show there are people watching, there are people for things,
of the force field than here. we say that there's more energy on the charges here than here, which introduces a concept, i wanna see if you can get into, the idea of energy per charge, and we call that voltage. let me define that. energy per charge. that'd be energy in joules compared to charge. and do you know what the unit of charge is? - coulomb. - coulomb. so one joule per one coulomb is said to be an electrical pressure of one volt. so that's what voltage is, energy per charge. we saw the dome was charged up to thousands of volts. so trisha touched that thing, thousands of volts. why wasn't trisha zapped? well, she zapped a little bit, but why is she still here today? enormous amount of energy per charge, okay? but not very many charges. if trisha went home tonight and took a bobby pin and stuck into 110 volts at home, honey, trisha wouldn't be here next time maybe, yeah, okay? she'd be hurt. you know why? that's not so much energy per charge. but how many charges are gonna flow when you stick into the power company socket, a lot or a little? it begins with a l. - a lot. - a lot. so ther
, really, really nice, quality asparagus. >> the asparagus ferns gather energy and nutrients from the summer sun, then sit dormant in the fall and winter, but as soil temperatures warm in the spring, the asparagus crowns underground become active, and the bright-green stalks emerge, sometimes sprouting as much as 10 inches in one day. this growth spurt can be attributed to the san joaquin delta's formerly river-bottom soil. >> the delta peat soil is so fertile, uh, so light. it's an organic-based soil, and it really produces premium asparagus. and the stronger the crown underneath the soil, the healthier it is, the bigger the spear is. >> during peak season, 9 is the magic number. the loyal crews survey each row of asparagus, searching for those that are 9 inches, with tight tips, and therefore ripe for picking. >> well, our crews progress through the field harvesting the asparagus, the 9-inch asparagus that we're looking for, pile 'em up in windrows, and then, uh, tractors with our--with our, uh, boxes and bins on it come through, and they gather this up, place it in--gently plac
Search Results 0 to 11 of about 12 (some duplicates have been removed)